As a single parent I don't get much free time to go out of an evening and see my friends

My boyfriend is mad at me as I've arranged to see a few friends this Friday evening and another set of friends the weekend after to celebrate my birthday.

He thinks he's an after thought as I didn't make plans with him or include him in these plans.

I told him I'd rather spend a full day with him to celebrate instead of a few hours in an evening. I even asked if he wanted to come to my house on my birthday night to see me.

He thinks I've chosen them over him to 'celebrate properly' in his definition.

Said he's upset I've treated him in this way and it isn't right

Just to add, both evening will consist of dinner with some of my girl friends, hardly a raving party